Britain's Jack Draper says he has another level to go at the US Open after he beat Alex de Minaur to reach his first Grand Slam semi-final.
The 22-year-old, who is yet to drop a set in New York, won 6-3 7-5 6-2 against the Australian 10th seed.
He will now play either world number one Jannik Sinner or 2021 champion Daniil Medvedev in the last four on Friday.
"This is not an overnight thing for me," the 25th seed said.
"I felt like my level today was solid, there were some glimpse of really good stuff.